hf/tzAndrz/tzForm.aspx.cs

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using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Text;
using Webapp;

public partial class tzAndrz_tzForm : System.Web.UI.Page
{
    public int cityId = 0;
    protected void Page_Load(object sender, EventArgs e)
    {
        if (Session["currentUser"] == null)
        {
            JS.ToRedirect("/login.aspx");
        }
        DataFild();
    }

    private void DataFild()
    {
        DataTable provinces = new tzlm.BLL.province().GetAllList().Tables[0];
        DataTable citys = new tzlm.BLL.city().GetAllList().Tables[0];

        ddl_province.DataSource = provinces;
        ddl_province.DataTextField = "proName";
        ddl_province.DataValueField = "proID";
        ddl_province.DataBind();

        StringBuilder sb = new StringBuilder();
        foreach (DataRow item in provinces.Rows)
        {
            DataRow[] rows = citys.Select(string.Format("proID = {0}", item["proID"]));

            if (rows.Length != 0)
            {
                sb.Append("<input type='hidden' id='provinceID" + item["proID"] + "' value='");
                foreach (DataRow row in rows)
                {
                    sb.Append(string.Format(@"<option value={1} >{1}</option>", row["cityID"].ToString(), row["cityName"]));
                }
                sb.Append("' />");
            }
            else if (rows.Length == 0)
            {
                sb.Append("<input type='hidden' id='provinceID" + item["proID"] + "' value='");
                sb.Append(string.Format("<option value={1} >{1}</option>", "", item["proName"]));
                sb.Append("' />");
            }
        }

        Page.RegisterStartupScript("", sb.ToString());

        ddl_province.Items.Insert(0, new ListItem("全国", "全国"));
        ddl_city.Items.Insert(0, new ListItem("全国", "全国"));
    }
    protected void btn_save_Click(object sender, EventArgs e)
    {